Spectrum-controls 1746sc-NI8u Manuale Utente Scaricare il pdf (Pagina 128)

116 SLC 500

™

Universal Analog Input Module

• For multiple exposed thermocouples, do not allow the measuring

junction of the thermocouple to make direct contact with electrically

conductive process material.

• Use a single exposed junction thermocouple with multiple ungrounded

junction thermocouples.

• Use all ungrounded junction thermocouple instead of the exposed

junction type.

CH3

CH0

MUXES

1746sc-NI8u

Exposed junction with shielded cable

Conductive Material

1 2 ... 123 124 125 126 127 128 129 130

NIVERSAL 1
Important Notes 3
Terms & 6
Abbreviations You 6
Should Know 6
Preface iii 7
Table of Contents 9
Module Overview 13
Chapter 1 13
System Overview 15
4 SLC 500 16
Block Diagram 19
8 SLC 500 20
Chapter 2 21
Terminal Block Header 23
12 SLC 500 24
Selecting A Rack 25
Module Installation 25
14 SLC 500 26
Wiring Your Module 27
Wiring RTD or 28
Resistance Sensors 28
Preparing and 30
Wiring the Cables 30
20 SLC 500 32
22 SLC 500 34
Your Module 35
Chapter 3 35
24 SLC 500 36
Channel Filter 37
Frequency Selection 37
28 SLC 500 40
Update Time 41
Channel Turn-On 42
Turn-Off, and 42
Reconfiguration 42
Auto-Calibration 42
Response to Slot 44
Disabling 44
Channel Configuration, Data 45
Chapter 4 45
Configuration 46
Procedure 46
36 SLC 500 48
38 SLC 500 50
40 SLC 500 52
Channel Data Word Resolution 54
44 SLC 500 56
Channel Data/Status 57
Channel Status 57
Checking 57
46 SLC 500 58
48 SLC 500 60
50 SLC 500 62
Programming Examples 63
Chapter 5 63
52 SLC 500 64
Programming 65
Verifying Channel 66
Rung 2:0 67
Rung 2:1 67
Rung 2:2 67
Rung 2:3 67
Rung 2:4 67
Interfacing to the PID 68
Instruction 68
Data Table 69
58 SLC 500 70
60 SLC 500 72
62 SLC 500 74
Testing Your Module 75
Chapter 6 75
If Module 76
LED is: Status LED is: 76
Interpreting I/O Error 78
Instrumentation 79
Verifying With Test 79
68 SLC 500 80
Maintaining Your Module 81
And Ensuring Safety 81
Chapter 7 81
72 SLC 500 84
Module Specifications 85
Appendix A 85
Physical 86
Specifications 86
EnvironmentalSpecifications 86
Input Specifications 86
78 SLC 500 90
Degrees C TC Input 91
Degrees C Deviation 91
80 SLC 500 92
RTD and Resistance 94
84 SLC 500 96
86 SLC 500 98
88 SLC 500 100
90 SLC 500 102
Thermocouple Descriptions 103
Appendix B 103
92 SLC 500 104
Thermocouples 105
94 SLC 500 106
96 SLC 500 108
98 SLC 500 110
104 SLC 500 116
References 118
108 SLC 500 120
110 SLC 500 122
112 SLC 500 124
Using Grounded Junction 125
Junction Thermocouples 125
Appendix C 125
Measuring Junction is 126
Measuring Junction 126
116 SLC 500 128
Getting Technical 129
Assistance 129
Declaration of 129
Conformity 129

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